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以实际刊发为准
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LIU Yali, ZHAO Ya-long, WANG Peng, KANG Xiao-rong, JING Zhao-qian, WANG Zhu-lai
2026,43(4)
Abstract:
Nitrogen-rich graphite carbon nitride (g-C3N5) has shown its great potential in the field of photocatalysis due to its narrow bandgap (~2.2 eV) and its ability to absorb visible light with a wavelength of ≤660 nm. However, a single g-C3N5 semiconductor has bottlenecks such as high photogenerated carrier recombination rate and low quantum efficiency. The construction of heterojunction to regulate the interfacial charge migration path has become an effective strategy to improve its photocatalytic performance. In this article, the structures, charge transport mechanisms and modification strategies of g-C3N5 based heterojunctions are summarized, and the photocatalytic degradation performance and mechanism on organic pollutants in aqueous solution are established. In addition, based on the current development status, it is proposed that in the future, environmentally friendly inorganic semiconductors should be developed for the construction of heterojunctions, a mode of "machine learning screening- DFT in-depth analysis-experimental verification" should be established to accelerate the development and optimization of high-performance heterojunctions, efficient and accurate charge detection methods should be applied to reveal the structure and charge transfer mechanism of heterojunctions, and the long-term continuous experiments should be conducted to evaluate the stability and applicability of photocatalysts.
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ZHANG Xuehao, LYU Kaihe, HUANG Xianbin, SUN Jinsheng, DAI Jiajun, He Juan
2026,43(4)
Abstract:
Water-based drilling fluid is faced with complex conditions such as high temperature and high salinity in the formation, and cuttings intrusion, which can cause severe thickening of the drilling fluid, resulting in excessive pump start-up pressure, pipe sticking, wellbore instability, and other issues. Viscosity reducers are crucial for regulating the rheological properties of drilling fluid and preventing the thickening. The mature viscosity reduction theory is the basis of developing high-performance viscosity reducers. In this paper, the research status of various viscosity reduction theories (drilling fluid network structure destruction theory, dispersion inhibition of clay hydration theory, and hydrophilicity reduced theory) as well as different types of viscosity reducers (modified natural materials, synthetic polymers, viscosity reducers prepared from industrial and domestic waste) are reviewed. The shortcomings of existing viscosity reduction theories and viscosity reducers are summarized, the difficulties of theoretical research and material development are analyzed. It is proposed that molecular simulation should be employed to visually validate viscosity reduction theory at the molecular level to guide the selection of efficient functional monomers. Moreover, optimizing the synthesis process, reducing the modification cost, with a focus on the development of low-cost, high-performance, eco-friendly, and intelligent viscosity reducers, is the developing trend in the future.
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WANG Jinrui, HE Yanyan, CHENG Wen-xi, LOH Teck Peng, LI Jin-ling
2026,43(4)
Abstract:
With consumers" increasing concern for food safety and environmental protection, the application of polylactic acid (PLA) antimicrobial composites in the food field has attracted a lot of attention. PLA, as a biodegradable and environmentally friendly material, possesses good biocompatibility, however, its antimicrobial properties are weak, which limits the scope of application. This problem can be effectively improved by compositing with various antimicrobial agents. Common antimicrobial agents include metal and oxide nanoparticles, natural antimicrobial substances and organic antimicrobial agents. These antimicrobial agents, when compounded with PLA, confer excellent antimicrobial activity to the material, which can effectively inhibit the growth of common spoilage microorganisms and pathogenic microorganisms in food. This paper reviews the research progress of PLA antimicrobial composites, focusing on the preparation method of PLA antimicrobial composites, the classification of antimicrobial composites, and their applications in food, which will provide some reference for the research and production of new and efficient antimicrobial PLA composites in the future.
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TU Qian, CHEN Liang-zhe, WU Chao-di, WANG Peng, DENG Ya-feng, TANG Wen-tao
2026,43(4)
Abstract:
With the rapid development of commodity economy, fake and shoddy goods are increasingly rampant. Fluorescent anti-counterfeiting is one of the most effective anti-counterfeiting means. Carbon quantum dots (CQDs), as a fluorescent material with excellent properties, is demonstrated wide range of preparation methods, good biocompatibility, broad excitation spectrum and long fluorescence life. Showing great application potential in the field of fluorescence anti-counterfeiting. Thus, the preparation method, structure and fluorescence mechanism of carbon quantum dots are firstly introduced in this review. Subsequently, the common modification methods, such as heteroatom doping, surface functionalization and composite modification, are reviewed through an inside-out approach. In addition, the application status in anti-counterfeiting is systematically analyzed, mainly focusing on the research of CQDs in anti-counterfeiting based on single-mode, double-mode and triple or more mode response mechanisms in detail. Compared with the single-mode anti-counterfeiting, the multi-mode response mechanism is more complex, which significantly improves the security and reliability of anti-counterfeiting, thereby positioning multimodal approaches as the predominant direction for next-generation anti-counterfeiting technologies. Thus, this study provides a reference for the subsequent research of the modification and intelligent anti-counterfeiting technology of carbon quantum dots anti-counterfeiting materials through systematic review.
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HAO Xiaoting, LI Duo, Lou Jiang, JIANG Yi-fei, HAN Wen-jia
2026,43(4)
Abstract:
In recent years, supramolecular polymer adhesives with high adhesion strength have garnered widespread attention in fields such as flexible sensing, biomedicine, and fine chemical engineering due to their advantages of dynamic reversibility, superior interfacial adaptability, high adhesion strength, excellent stability, and strong environmental tolerance. They have become a prominent research focus in materials science. This review summarizes recent research progress on high-strength supramolecular polymer adhesives both domestically and internationally. It details their adhesion mechanisms, provides an in-depth investigation into their action mechanisms and structure-property relationships, and synthesizes the current application status of these adhesives in areas like underwater adhesion and biomedicine. The review aims to lay a more solid theoretical foundation for the design and preparation of adhesive materials, thereby promoting continuous innovation and development of fine chemicals within the chemical engineering sector. Furthermore, it summarizes the existing challenges and outlines future development trends. It is anticipated that future research will develop supramolecular polymer adhesives exhibiting even higher adhesion strength, superior biocompatibility, intelligent responsiveness, and enhanced mechanical strength.
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SUN Ai-ling, HUANG Xiao-qing, YANG Jian-jun, CHEN Man, MA Jun, WU Qing-yun, WU Ming-yuan, ZHANG Jian-an, LIU Jiu-yi
2026,43(4)
Abstract:
Dopamine-coated silica (PDA-SiO2) was prepared by self-oxidative polymerization with dopamine and tetraethyl orthosilicate as modifying agents; Hydrophobic modified polydopamine coated nano-SiO2 (HDA-PDA-SiO2) composites were prepared by Michael addition reaction between catechol groups on the surface of PDA-SiO2 and amino groups of hexadecylamine (HDA). The composite coatings were prepared by blending HDA-PDA-SiO2 with waterborne epoxy resin. The structure and thermal properties of the composite materials were characterized using FTIR, TGA, and XPS. The effect of the amount of HDA-PDA-SiO2 (the mass percentage of the composite material in the total mass of aqueous epoxy resin and curing agent) on the physical properties of the coating samples was analyzed through physical property tests and contact angle measurements. The impact of the amount of HDA-PDA-SiO2 on the anti-corrosion performance of the coating was evaluated through electrochemical experiments and salt spray tests. The results indicate that the HDPDNS/WEP2 coating, prepared using 0.8% HDA-PDA-SiO2, exhibits the best overall performance. It has an adhesion rating of 0, a pencil hardness of 4H, an impact resistance of 45 kg cm, a contact angle of 108.8°, and a corrosion inhibition efficiency of 98.3%. Compared to the WEP coating, the corrosion current density of the HDPDNS/WEP2 coating decreases from 7.01×10-5 A/cm2 to 3.92×10-6 A/cm2, and the corrosion potential increases from-0.547 V to-0.199 V. Additionally, the HDPDNS/WEP2 coating shows no significant changes in salt spray resistance over a 30-day test period.
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WEI Xinyu, FANG Qinghong, LUO Sen, KANG Hailan
2026,43(4)
Abstract:
In this study, octadecylamine (ODA)was employed to graft-modify graphene oxide (GO), followed by reduction with hydrazine hydrate (N2H4). This process effectively improved the dispersion stability of graphene in organic solvents, and successful modification was confirmed through various characterization techniques including Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, scanning electron microscopy (SEM), and X-ray diffraction (XRD). A bio-based flexible strain sensing material was fabricated through solution blending and compression molding processes, utilizing bio-based Eucommia ulmoides gum as the matrix. An efficient conductive network structures were established via the synergistic effect of modified graphene and carbon nanotubes (CNT). The dispersion of fillers within the matrix and the sensing performance of the flexible material were systematically investigated using a universal testing machine, Fluke data acquisition instrument, and transmission electron microscopy (TEM). The results demonstrated that the modified graphene and carbon nanotubes achieve uniform dispersion in the gutta-peritoneum matrix, which makes the sample obtain excellent electrical conductivity, and the resistance of the sample is reduced by 2 orders of magnitude compared with the sample filled with the unmodified filler. The Eucommia ulmoides gum flexible sensing material exhibited outstanding sensing performance in low-strain ranges, characterized by a gauge factor of 35, rapid response time of 56 ms, and remarkable stability.
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ZHUANG Chenxi, GUI Haoguan, LIU Wenjie, LI Xiazhang, YAO Chao, ZUO Shixiang
2026,43(4)
Abstract:
First, γ-glycidyl ether propyl trimethoxysilane (KH560) and diethylenetriamine (DETA) were used as raw materials to synthesize a novel multi-amino silane modifier (AS) through a ring-opening addition reaction. Next, the mesoporous silica (SiO2) carrier was prepared by acidification, calcination and pore-creation in natural wollastonite. Finally, amino-functionalized mesoporous SiO2 composites (AS/SiO2) were obtained by grafting AS onto the surface of the mesoporous SiO2 carrier. The samples were characterized using techniques such as X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N2 adsorption-desorption (BET), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The static and dynamic adsorption performance of AS/SiO2 for CO2 capture under different loading conditions was investigated, and its adsorption mechanism was studied. The results indicated that AS was bonded to the surface of the mesoporous SiO2 carrier in the form of the chemical bond. Compared to SiO2, the AS/SiO2 composite significantly improved the CO2 adsorption capacity and breakthrough time. When the AS loading was 10%, the equilibrium CO2 adsorption capacity of the AS/SiO2 composite was 123.4 mg/g.
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CHEN Zhisheng, CHEN Meiqian, YAN Peng, LIN Minli, WU Huanxin, WEN Xiaotong
2026,43(4)
Abstract:
A microporous selective adsorbent of carbon dioxide was constructed with raw materials such as zinc nitrate, 5-chloroisophthalic acid, and 4,4"-bipyridine, using pore size matching and chlorine functionalization strategies. The stability of the material was investigated by XRD and TG, and the results showed that it has excellent moisture stability and good thermal stability. The XPS and FTIR analysis results showed that the surface of material contains C, N, O, Cl, and Zn, and it has characteristic peaks of the functional groups of organic ligand. The analysis of specific surface area and pore size indicated that the synthesized material has a ultra microporous structure, with a most probable pore size of 0.349 nm and a BET specific surface area of 254.29 m2·g-1. Under the synergistic effect of micro pores and functionalized chlorine groups, the adsorbent exhibits good affinity for CO2. At 298 K and 100 kPa, the adsorption selectivity of CO2/C2H2, CO2/CH4, CO2/CO, and CO2/N2 were 2.80, 17.77, 34.80, and 71.47, respectively. The microporous adsorbent has moderate adsorption heat for CO2, making it easy to activate and regenerate, and its stability and reusability are excellent. So it is a good selective adsorption material for CO2.
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YU Deyu, DENG Qing-sheng, YAN Xin-mei, ZOU Hai-peng, ZHANG Zi-chen, ZHANG Hong-wen, JIANG Yan
2026,43(4)
Abstract:
Composite sponges MS@PDA@APTMS were prepared by modifying melamine sponges (MS) with polydopamine (PDA) and introducing hydrophobic 3-aminopropyltrimethoxysilane (APTMS), and crosslinked copolymer (GSP) solutions containing epoxy groups at the end and long carbon chain groups were prepared by the sulfhydryl-alkenyl-click reaction, and were used for impregnation curing of composite sponges MS@PDA@APTMS. The superhydrophobic MS@PDA@APTMS@GSP composite sponge (MPAG) was prepared. The chemical structure and morphology of MPAG were characterized by FTIR and SEM, and its mechanical durability, oil-water separation ability and photothermal deicing performance were investigated. The results showed that the deposition of PDA endowed the MPAG with photothermal properties and provided active sites for subsequent reactions; the introduction of epoxy groups and GSPs with long carbon chain groups formed a rough surface and significantly enhanced the mechanical durability and hydrophobicity of the sponge.The water contact angle of the MPAG was 156°, which remained above 150° after 20 tape stripping or sandpaper abrasion experiments, and it still showed superhydrophobicity; MPAG has good separation effect on the mixture of different organic solvents (carbon tetrachloride, methylene chloride, toluene, hexane, ethyl acetate) and water, and the separation efficiency is 90.7%~99.5%. The separation was repeated for 20 times, and its separation efficiency for carbon tetrachloride/water mixtures remained above 98%; the maximum surface temperature of MPAG under infrared lamp irradiation was 68.5 ℃, which was 2.5 times higher than that of MS (27.7 ℃) under the same conditions.
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GAO Xinlei, WANG Songbin, DENG Xiaochun, LI Zhanying, ZHANG Jin, WANG Dun, DU Xueyu, YIN Xueqiong
2026,43(4)
Abstract:
PC/Fe3+?catechol moiety functionalized nano-silica (CFNS? Fe3+) binary composite film materials were constructed by using solution blending method with CFNS? Fe3+ as the reinforcing filler. Scanning electron microscopy, laser particle sizer and Raman spectroscopy were applied to characterize the surface morphology and structure of CFNS?Fe3+. The mechanical properties, thermal stability, micro-morphology of fracture surface, UV?visible light transmittance and surface wear resistance of the composite films were analyzed and evaluated by a universal mechanical tester, thermogravimetric analyzer, scanning electron microscope, UV?visible spectrophotometer, and ball-on-disk tribometer, respectively. The results show that the tensile strength and tensile modulus of the composite film can reach 50.6 MPa and 1022 MPa, respectively, when the addition of CFNS-Fe3+ is 1%; the initial degradation temperature and the maximum degradation temperature can be increased by 5.5 oC compared with that of the pure PC film; and the average friction coefficient of the composite film is 0.30, indicating relatively high wear resistance. In addition, the composite film can achieve effective shielding of UV light while ensuring high transmittance of visible light.
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2026,43(4)
Abstract:
Using fish skin gelatin (FG) and carboxymethyl chitosan (CMCS) as raw materials, orange essential oil (OEO) as antibacterial agent, the antibacterial composite membrane was prepared by crosslinking method, through FTIR, XRD, SEM, thermal weight analysis, and its mechanical, optical, barrier, antibacterial properties were tested.the results show that,